// Copyright 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
author: Caitlin Potter <caitp@igalia.com>
esid: sec-asyncgenerator-prototype-return
description: >
  Generator is not resumed after a return type completion.
  Returning promise
info: |
  AsyncGenerator.prototype.return ( value )
  1. Let generator be the this value.
  2. Let completion be Completion{[[Type]]: return, [[Value]]: value, [[Target]]: empty}.
  3. Return ! AsyncGeneratorEnqueue(generator, completion).

  AsyncGeneratorEnqueue ( generator, completion )
  ...
  8. If state is not "executing", then
    a. Perform ! AsyncGeneratorResumeNext(generator).
  ...

  AsyncGeneratorResumeNext:
  If completion.[[Type]] is return, and generator.[[AsyncGeneratorState]] is
  "suspendedYield", generator is resumed and immediately closes the generator
  and returns completion.
flags: [async]
features: [async-iteration]
---*/

function Test() {
    var g = async function*() {
      yield 1;
      throw new Test262Error('Generator must not be resumed.');
    };

    var it = g();
    var resolve;
    var promise = new Promise(function(resolver) {
      resolve = resolver;
    });
    it.next().then(function(ret) {
      assert.sameValue(ret.value, 1, 'Initial yield');
      assert.sameValue(ret.done, false, 'Initial yield');

      it.return(promise).then(function(ret) {
        assert.sameValue(ret.value, 'unwrapped-value', 'AsyncGeneratorResolve(generator, resultValue, true)');
        assert.sameValue(ret.done, true, 'AsyncGeneratorResolve(generator, resultValue, true)');

        it.next().then(function(ret) {
          assert.sameValue(ret.value, undefined, 'Generator is closed');
          assert.sameValue(ret.done, true, 'Generator is closed');
        }).then($DONE, $DONE);
    
      }).catch($DONE);

      resolve('unwrapped-value');
    }).catch($DONE);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
